Improvement in seal-bolts for car-doors



W. BURTIS.

SEAL-BOLTS FOR CAR-DOORS.

Patented March 6,1877.

GZZfM N. PETERS. PHOTO LIT PNER. WASHINGTON D C UNITED STATES PATENTOFFICE} WILLIAM BURTIS, OF NEW YORK, N. Y., ASSIGNOR OF TWO-THIRDS HISRIGHT TO GEORGE W. BOGERT AND FREDERIG W. MELVIL, OF SAME PLACE.

IMPROVEMENT IN SEAL-BOLTS FOR CAR-DOORS.

Specification forming part of Letters Patent N o. l88,041, dated March6, 1877; application filed January 31, 1877.

To all whom it may concern:

Be it known that 1, WILLIAM Evans, of New York, in the State of NewYork, have invented a new and useful Improvement in Seal-Bolts forRailroad- Oars, which improvement is fully set forth in the followingspecification and accompanying drawing, in which- Figure I is alongitudinal view of the inside of a railroad freight-car with myseal-lock attached. Fig. II is a cross-section of one side of the car.

The object of my invention is to furnish a fastening for a freight-carwhich shall be perfectly secure, easily operated, and which, at the sametime, can be easily watched while a number of cars are placed side byside in a depot.

In the drawing, A represents part of a railroad freight-car, and B thesliding door, con structed in the usual manner.

To one of the posts or side frames of the door-opening U a suitableframe, D, provided with projecting guides or tongues m and m, issecurely fastened, and a staple, E, so arranged as to pass over one ofthe tongues m whenever the door B is shut, is securely fastened to theinside of the door B. Through suitable holes in these guides or tonguesm a bolt, G, is made to work. This bolt G passes through a box, H,fastened to the top of the car on the outside, and a suitable knob orhead, to, is made at the upper end of said bolt, for the purpose ofoperating the same.

In the box H a spring-bolt, r, is arranged, operated by a suitable flatspring, S, or a spiral spring may be arranged for that purpose. Thisspring-bolt c enters a suitable hole in the bolt G when said bolt hasbeen moved downward and been passed through all the tongues m, in whichposition, if the door B has been closed, and its staple E passed overone of the tongues m, the bolt Gwill lock and fasten the door and thisspring-bolt 2: will hold said bolt in this position until, by means of asharp-pointed instrument, said spring-bolt '0 is pushed back clear ofthe bolt G, when the bolt can be drawn upward out of the tongue m, overwhich the staple E has passed. and allow the door to open.

In the front of the case or box H, opposite the spring-bolt c, anopening, 00, is made, hehind which opening, in a recess in the bolt G, asuitable seal can be placed so as to cover the end of the spring-bolt c,and prevent the operating or pushing back of said spring-bolt withoutfirst destroying this seal.

The box H is made perfectly tight, and closed, with the exception ofthis hole or opening a; consequently the spring-bolt n can only beoperated through this opening 90.

The staple E and the frame D, to which the tongues m are fast, being allattached to the inside of the car, are consequently perfectly secure,and the bolt G being arranged to project through the roof, and to beoperated from the roof of the car only, will enable one man to Watch awhole train, or any number of cars standing side by side in a depot, andprevent any interference with the same.

The frame D, containing the tongues m, may be inortised into the post orside traming 0, and it will readily be understood that any other desiredfastenings may be placed upon the outside of the car or sliding door.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- In a railroad freight-car, the internalfastening, consisting of the staple E, tongues m, and bolt G, extendingup through the roof of the car, in combination with the spring-lockingbolt 1;, arranged in a close box, H, actin as a guide for the bolt G,and fastened to the roof of the car, said box being provided withan'opening, at, opposite the spring-bolt 'v, and seal covering the same,the whole being arranged to operate substantially as described.

WILLIAM BURTIS. Witnesses:

HENRY E. ROEDEB, WM. EHRET.

